Adding debian build package workflow

- Note: The workflow runs the script and the script version info needs
  to be updated before every release. There needs to be some work to
  make the versioning automatic.

.github/workflows/debian-package.yml

@@ -0,0 +1,32 @@
+name: package namban for debian
+
+on:
+  release:
+    types:
+      - created
+
+jobs:
+  build:
+    permissions:
+      contents: write
+    runs-on: ubuntu-latest
+    container:
+      image: debian:12
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install gh-cli
+        run: |
+          apt update
+          apt install gh
+
+      - name: Run the build script
+        run: ./package/debian/build.sh
+
+      - name: Upload the package file to the release
+        run: |
+          gh release upload ${{ github.event.release.tag_name }} ./namban*.deb -R ${{ github.repository }}
+        env:
+          GH_TOKEN: ${{ github.token }}
+
+